微电网解并列控制系统研究

Research on DSP and FPGA Based Micro-grid Paralleling and Splitting Control System

设计了一种微电网快速解并列装置,采用了具有快速开通/关断性能的IGBT作为主开关,代替开关速度较慢的断路器、接触器等机械式开关,来实现微电网与大电网之间的解并列。并设计了基于DSP和FPGA的微网解并列控制系统,实现了模拟量采集、参数计算、控制逻辑、IGBT开关控制以及通信功能。通过双同步坐标系解耦的软件锁相环(DDSRFSPLL)算法实时检测电压幅值、频率以及相位,实现了电压检同期逻辑判断。采用基于Ip-Iq变换的谐波检测方法,对并网电流谐波含量实时检测,将检测结果作为解并列判断依据和电能质量参数实时发送至微网控制器。

This paper presents a design of micro-grid paralleling and splitting device which applies IGBT as the main switch to instead of the breakers,contactors and other mechanical switches,by accomplishing to parallel and split between micro-grid and power-grid.Based on DSP and FPGA platform,the micro-grid paralleling and splitting control system can realize the analog acquisition, parameter calculation,logic control,IGBT switch control and communication.According to the dual synchronous coordinate decoupling SPLL（DDSRF-SPLL） algorithm,the system can detect voltage amplitude,frequency and phase of power-grid and micro-grid in real-time.